{"answers":{"affected":"3 open source packages ship an affected version, including mistune.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-76098 exists.","fix":"Upgrade mistune to 3.3.3 or later.","what":"CVE-2026-76098 is a high-severity denial of service vulnerability in lepture mistune, published on 24 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-76098 and fix it if it is affected.\n\nWhat it is: CVE-2026-76098 is a high-severity denial of service vulnerability in lepture mistune, published on 24 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-76098 exists.\n\nAffected packages and fixed versions:\n- mistune (PyPI): affected from 3.3.0; fixed in 3.3.3\n- mistune (PyPI): affected from 3.3.0; fixed in 3.3.3\n- mistune (PyPI): affected from 3.3.0; fixed in 3.3.3\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-76098/ (Markdown: https://insights.sbomify.com/CVE-2026-76098/index.md)","id":"CVE-2026-76098","markdown":"https://insights.sbomify.com/CVE-2026-76098/index.md","name":"CVE-2026-76098","record":{"aliases":["AZL-97956","DEBIAN-CVE-2026-76098","ECHO-47d2-ddd1-74a0","GHSA-6m44-fpc8-c3rq","MINI-x355-jpjp-p4hj","PYSEC-2026-3863","UBUNTU-CVE-2026-76098"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Python Markdown parser","requires_auth":"none","summary":"Crafted Markdown with excessive emphasis markers causes a RecursionError, crashing the parsing process in the Mistune library.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-674","name":"Uncontrolled Recursion"}],"description":"Mistune is a Python Markdown parser with renderers and plugins. Versions 3.3.0 through 3.3.2 are vulnerable to DoS through deeply nested tokens. HTML rendering creates deeply nested emphasis tokens from consecutive asterisk characters, and recursive rendering in HTMLRenderer.render_token() can exceed Python's recursion limit and raise RecursionError, allowing crafted Markdown to crash a parsing process. This issue is fixed in version 3.3.3","ecosystems":["PyPI"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Mistune has Denial of Service — RecursionError via Excessive Emphasis Markers in Markdown","id":"CVE-2026-76098","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":3,"n_references":2,"next":{"headline":"Misconfiguration in ObjectScale","id":"CVE-2026-76104"},"packages":[{"ecosystem":"PyPI","fixed":["3.3.3"],"introduced":["3.3.0"],"last_affected":[],"package":"mistune","purl":null,"source":"GHSA-6m44-fpc8-c3rq"},{"ecosystem":"PyPI","fixed":["3.3.3"],"introduced":["3.3.0"],"last_affected":[],"package":"mistune","purl":"pkg:pypi/mistune","source":"GHSA-6m44-fpc8-c3rq"},{"ecosystem":"PyPI","fixed":["3.3.3"],"introduced":["3.3.0"],"last_affected":[],"package":"mistune","purl":"pkg:pypi/mistune","source":"PYSEC-2026-3863"}],"prev":{"headline":"Formie: Missing authorization on sent notification resend modal exposes submission PII","id":"CVE-2026-76089"},"products":["mistune"],"published":"2026-08-24","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"PyPA Advisory Database","prefix":"PYSEC"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-08-24","vendors":["lepture"]},"summary":"Crafted Markdown with excessive emphasis markers causes a RecursionError, crashing the parsing process in the Mistune library.","url":"https://insights.sbomify.com/CVE-2026-76098/"}